Clamp



. Jun 14', 1927.

' w. T. TABB v CLAMP Filed Nov. 11, 1925 ATTORNEY iably uniform gripping pressureagainst said Patented June 14,1927. a i 7 1,631,991

are-rem jJOFFICE Q v Q wmnnn'f irnnn or V l i Am flketion filed liovember 1 1 Seriai I To. 68 1 1( v My invention relatesparticularly to v Inthedrawing': v I

clamps for retaininghair on haircurlers F i are lshowsin end View aclarnp acbut more generally applies-to clainps ofthe cording to this invention, ing'ripping posiadj ustable type adaptable to grip cylindricalftion on a body shown in transversesection. 55

r bodies and others, of variousfsizes. v" i 1 igiire 2 is a front elevation of Figure 1 An object ofiny invention isto provide a showing a portion of the body in [dotted cla np adapted to grip bodiesof various lines. i e g Y sizes without previous adjustment of the Figure 3 is aplanview of theisalne clamp c1an1p, and which will automatically adjust and body seenfroln above Figure 2i iogitselif Witllinlilflits tofthe shape andsize Figure 4 shows inendfview the same of the body. V I p p a i p clamp as above gripping a body oi" larger. v

A further object isto providecsuch a iZ ,,Sh'( Y 7n1e1So section i clamp as above which, will in various degurefi s w e s e'c amp n-its free grees of extension required,v provide a reasonpositionunattached to a'ny body. 65

Fig K1306 'isa; sectional view of a resilient b d y i V V ineinber of the aboveclanip,in its free condi- I a particular object is to provide. sucha jt'iOnQ The section is taken on apl'a'ne cor-- clainp as above which will be suitablefor use responding to 6- 6 of Figure 3. i with a hair curler, to hold the hair in; a I igure 7 shows in end View a different 70 a pound condition on the-spindle on which form ofiny l pn it f pos t o vit is wound. I y a a a c EigureBisa front elevation of the clamp, Arnoreparticular objectisto provide such of Figure 7. v p aclainp as the above adaptable for use ,with- Referring particularly to the form) of Out previous adjustinenuwith hair ofvarclainpshownf by Figures 1 to 6 inclusive; 7 ions lengths and various amountsof hair of this clamp comprises two cooperating jaws a given length orbriefly, with various sized 9 and 10 of substantially seinitubular forniabobbins of hair. p 7 g tion, connected by a resilient ine nber-ll of A further object is to provide a clamp. sheet formation resembling a split tube cmwhich will give a reasonably'uniforni Wrap compassing he jaws 9 and 10, and having its or degree of inclosure of various sizes boblongitudinal edges 14: and 15 of the jaws. A

bins'of hair, and which may be adjustable "shield16 is attached at theedge 15 of the p while in placegtoigive a greater or less'wrap above asse1 1bly,,e;-:tending outwardly of the as desired. r l v i inernber' l1, and'backwardly from the edge A; further object is to provide such 21,13 of-the saline. 1 l clamp as above,.Which when used with ahair The cooperating jaws 9and10shown have curleroi' the clas having a'heating element I their inner concave-surfaces each of a transinternal of a spindle, or other means of heatverse section presenting a circular arc of ing thehair in position, will provide an in-j *slightlyless than 180 "degrees, and similarly p sulating nieans to protect the bodyiof the theirconvex outersuiifaces. This form of 1 user-from contact-Witlrthe heated portions jaw is well adapted to general conditions; .i of the curler. v at a i Q the jawsmay have,howevcr, a variety of A further object ist'o provide a'cla'nip for forms ltofsuit conditions of use, the inner such purposes asiabove whichmayfbesimple" surfaces fon'exa nple may be straight or of construction and easily attachable to, and i fluted' oi-"fornied to .fit the outer surface of reinovablefrom, theu bobbini orotherf body a particular body to beheld thereby, and TI" similarly the outer surfaces maybesuch as vThe above and other obj t of; thi in to givea special expansion characteristic to vention will be m'ade clear'by. the.accom QtheQclamp ortolcooperate with a resilient panying drawing whichishowsgcertain -rmmer ,f of I different fforrna'tion than-L is with which itis used:

50 proved embodimentsof the-invention,vand shown;

i -'the following description;

-of Figure 6, and

forms, when the clamp is' the jaw 10, and the longitudinal edge 15 0f the jaw 10 is similarly located with respect to the concave inner surface of the jaw 9. This relationship results from the shape of the resilient member 11 which in its free position as shown in Figure'G has a formation presenting in section substantially the shape comprises substantially a three-quarter-circular cylindrical surface with tangential plane-surface forward ex-c tensions thereof. A portion of the member 11 constituting one of these extensions projects beyond their line of intersection and assembled as shown in Figure 5, an overhanging lip extending outwardly from the mouth ofthe clamp as shown at 1a of Figure 5. 7

With the clamp assembled but in its free condition as shown in Figure 5 the resilient member 11 has substantiallythe same for.- mation' as before assembly, but is somewhat expanded from its own free formation, by the jaws themselves,'to a larger radius of curvature of its cylindrical portion and produces an inward pressure of the jaws 9 and 10 against each other.

The jaws 9 and 10 may be attached to the member 11 in any convenient manner. In the form here shown, outward and backward extensions 18 and 19 are provided for the jaws 9 and 10 and attachment is made to these extensions by means of the tubular rivets 20 and 21, engaging the member 11 in holes 22 and 23, partly shown in Figure 6.

Perforations 2a and 25 in the end portions of the memberll give increased flexibility to these portions and provide in effect a flexible attachment of the member 11 to the jaws 9 and 10.

The shield 16 is attached also 21, and forms a convenient handle to be used in attaching theclamp. The shield 16 is preferably made of'fibre or other material having a relatively low conductivity for heat for reasons which will be hereinafter set;

forth The outer edge of the shield 16 is curved to give the clamp an attractive appearance and a hole 26 is provided to receive above is shown by Figures 7. and 8 of the thumb and fingers; the projecting edge 14 of Figure 5 is thenhooked over the body and a suitable movement of the shield opensthe mouth 1 17-15 of the clamp and allows pasthat the longiion the size of the bodygripped. These two "actions combine to permit the'jaws to be by the rivets sage of the body therethrough. The separation of the lips 14 and 15 is assisted by the perforated portions of the resilient member 11 so that the mid portion of the same will not beunduly flexed.

The clampin position will assume "a configuration dependingon'the size of the body. WVitht-hcclamp in operation, as in the case of- Figure ,,1, '-or Figure 4, the originally curved portion of the member 11' is expanded to a larger radius of curvature than in the free position of the clamp, whereas the originally'straight portions are bent inward to a greater or less extent, depending widely separated without straining the member 11. Also, with a comparatively large body such as 27 of Figure at the perforated end portions of the member 11 partially wrap themselves about the jaws 9 and 10 "and arethus protected against overflexture.

It will be clear also that since both the central and end portions are utilized forfiexure, the wide range of extension will not necessitate a wide variation in gripping pressure. j

The flexible connection provided between the jaws 9 and 10 permits these jaws to be moved rotatively with respect to each other independently of their translational movement of separation. The opposite flexure of the end and mid portions respectively of the member 11 results in an effective balance of forces over a considerable range. jaws'9 and 10 thus may be adjusted rotatively about such a body as 27 of Figure 4, or 28 of Figure 1, to rovi'de a greater or' less separation of the e ges 14 and 15, without affecting the stability of the clamp.

lVhen used for holdingfhair wound on a curler spindle, one size of clamp may be' used with windings of various sizes without undue variation of'holdi-ng pressure, and if the jaws in each case may be adjusted as pre- 11o viously described to provide'the degree of in closure desired. When used with a heatable spindle the clamp may'also'serve to insulate the wo'undhair fromthe head. The perforations 24 and 25 retard the conduction of 115 heat to the central portion of the member 11; and the shield '16 if formed of suitable material, will insulate end portions of the member 11 adjacent thereto; 'Still further protection may be provided by forming the 120 j aws9and 10 of fibre orother material of lowconductivity for'heat; j

A modified formhvof the clamp described drawings. In this form only one reentrantjaw 9 isprovi'ded, andthis jaw is formed as one piece with the resilient member'll. A

portion 29 of the resilient member 11 serves to cooperate with the jaw 9. An extension 30 of the resilient member 11 is slotted as The shown at 31 to receive the loop 32 of the.

v by bending a strip to the form shown and i United States Letters Patent for shield 16. The shield in this case is formed having open ends and a mouth extending longitudinally thereof, andperforations in said member adjacent said mouth, said perforations providing increased flexibility of said member adjacent said mouth.

comprising a resilient member and a jaw,

said resilient member having a semiclosedsurface formation with open ends and 'lOIlgl:

tudinal edges defining a mouthin said surface, said jaw being'joined to said m mber adjacent one of said edges and extending inwardly of said member backwardly from said edge. j

3. A clamp fora hair curler; said clamp comprising a jaw of substantially semitubular formation, and a resilient member attached to said jaw adjacent a longitudinal edge thereof; said resilientmember extending outwardly of said said jaw.

4. An expansible clamp for a hair curler;

said clamp comprising jaws and a member partially encompassing said jaws forming a resilient connection between the same, said connection adapting said aws to be moved 'apart by translation and also to be rotas tively adjusted under operative conditions. 5. A clamp for a hair curler; said clam comprising two jaws of substantially semitubular formation positioned withtheir concave surfaces ad acent, and a member substantially encompassing said aws and'forming aresilient connection between them.

6. A clamp for a hair curler; said clamp comprising jaws each having a concave surface and an edge extending longitudinally of said surface; said jaws being so positioned with respect'to each other that each presents its concave surfaceto the concave surface of the other and each has its afore-' said edge adjacent a mid concave surface of the other. i j 7. A clamp for a hair curler; said clamp comprising a jaw having a substantially seinicylindrical concave surface, and a'sec ond jaw having also a substantially semicylindrical concave surface; said second jaw having its concave surface presented to the concave surface of said and having a longitudinal edge of its conhandle for said clamp. 2. A clamp for a hair curler; said clamp 'tial curved-surface jaw and backwardly from said edge to substantially encompass portion of the.

' posed within said member tudinal edges substantially parallel and cave surface positioned adjacent amid portending outwardly and backwardly. from said month, said shield being made of amaterial having relative to the material of said member a low conductivity for heat; said shield being thus adapted 'to insulate portions of said member and to serveas a 9. Fora hair curler, a clamp whose internal formation comprises substantially a three quarter circular having tangential forward extensions from the longitudinal edges thereof and tangen- '10. A clamp for a hair curler; having externally, substantially the form of a three-quarter-cylindrical surface having tangential plane-surface forward and back- Ward extensions from one of its longitudinal edges, and having from its other longitudinal edge a tangential plane-surface forward extension projecting beyond the line of inter-.

section of'said extensions; the portions of said clamp constituting said extensions providing lips extending outwardly from a longitudinally extending mouth adjacent the line of intersection of said extensions.

11.. An expansible clamp; comprising a resilient member having substantially the form of a semiclosed cylindrical surface with a tangential plane-surface forward extension thereof, with open ends and two free adjacent longitudinal edges, and a jaw substantially semicylindrical-surface formation,

attached to said memberadjacentone of the v sameand adjacent V extending, tangentially inwardly and back-;

wardly from a longitudinal edge of said membe y'said jaws being thus opposedly disthei-r concave surfaces presented to each 7 inward-and-backward extensions from thefirst named extensions. said'clainp "surface formation with open ends and two longitudinal edges defining an extensible mouth; a shield for said clamp attached to said member adjacent said mouth and ex cylindrical surface with their longiother and with a longitudinal edge of each adjacent a mid portion of the concave sur-' 7 face of the other. 7 a 1 In witness whereof I have afiixed my hand this 10th day of November 1925.

' WARNER T.'TABB. 

